WO2022199340A1

WO2022199340A1 - Alignment target and four-wheel alignment system

Info

Publication number: WO2022199340A1
Application number: PCT/CN2022/078687
Authority: WO
Inventors: 罗文荟; 代彦民
Original assignee: 深圳市道通科技股份有限公司
Priority date: 2021-03-24
Filing date: 2022-03-01
Publication date: 2022-09-29
Also published as: CN112945068A; US20240175669A1; EP4293314A1

Abstract

Embodiments of the present invention relate to the technical field of vehicle detection devices, and disclosed are an alignment target and a four-wheel alignment system. The alignment target comprises: a target plate, the target plate being provided with a position indication pattern, and the position indication pattern being used for indicating position information of the alignment target; a flexible protective member, the flexible protective member being arranged around the periphery of the target plate; and a housing, the housing comprising a main body portion and a frame arranged around the periphery of the main body portion, the frame enclosing an accommodating space, the target plate and the flexible protective member being disposed in the accommodating space, the flexible protective member being located between the target plate and the housing, and the flexible protective member being used for buffering an interaction force between the housing and target plate. In this way, according to the embodiments of the present invention, the problem of deformation or even breakage of the target due to vibration, collision or falling is avoided, and the service life of a product is prolonged.

Description

Target positioning and four-wheel positioning system

This application claims the priority of the Chinese patent application with the application number of 202110316136.3 and the application title of "Location Target and Four-wheel Alignment System" filed with the China Patent Office on March 24, 2021, the entire contents of which are incorporated into this application by reference middle.

technical field

The application relates to the technical field of automobile detection equipment, and in particular to a positioning target and a four-wheel positioning system.

Background technique

After a long-term and long-distance driving, the relative position between the wheels will have a certain deviation. If it is not corrected, it will not only affect the driving performance of the car, but also accelerate the wear rate of system components such as tires and steering mechanisms. . Therefore, it is usually necessary to perform four-wheel alignment detection on the car after the car has been driven for a period of time.

During the four-wheel alignment detection of the car, the target target is installed on the hub of the car, and then the position indication pattern on the target target is collected by the image acquisition device on the detection equipment such as the locator, so as to obtain the position information of the four wheels and execute corresponding action. Because the target lacks an effective protective structure, it is easily deformed or even broken due to vibration, collision or falling, resulting in product failure and short service life.

SUMMARY OF THE INVENTION

In view of the above problems, the embodiments of the present invention provide a positioning target and a four-wheel positioning system, which can avoid the problem that the target is deformed or even broken due to vibration, collision or falling, and prolong the service life of the product.

According to an aspect of the embodiments of the present invention, a positioning target is provided, comprising: a target board, the target board is provided with a position indication pattern, and the position indication pattern is used to indicate position information of the positioning target a flexible guard, the flexible guard is arranged around the outer periphery of the target board; a casing, the casing includes a main body part and a frame arranged around the outer periphery of the main body part, the frame encloses a receiving space, The target board and the flexible protective piece are arranged in the receiving space, the flexible protective piece is located between the target board and the housing, and the flexible protective piece is used for buffering the housing the interaction force with the target plate.

In an optional manner, the target board includes a stacked support layer, a reflective layer, and a pattern layer located between the support layer and the reflective layer, and the pattern layer is provided with the position indication pattern, the support layer is located on the side of the pattern layer facing the main body; the flexible shield is attached and arranged on the outer periphery of the target plate to seal the support layer, the pattern layer and the Lamination gap between reflective layers.

In an optional manner, the flexible shield includes a first wall and a second wall disposed around the periphery of the first wall; the target board further has a connecting surface facing the main body, the The first wall is located between the connecting surface and the main body, and the second wall is located between the outer peripheral wall of the target board and the inner peripheral wall of the frame.

In an optional manner, the flexible guard further includes a third wall, the third wall is opposite to the first wall and is disposed at both ends of the second wall, and the first wall, The second wall and the third wall enclose a groove for fitting with the edge of the target board, and the third wall is provided with an escape opening for revealing the position indicating pattern.

In an optional manner, the outer wall surface of the frame is further provided with a plurality of anti-collision convex parts, and the plurality of the anti-collision convex parts are arranged around the outer circumference of the frame.

In an optional manner, the anti-collision convex portion and the frame have an integral structure.

In an optional manner, in a direction perpendicular to the plane on which the target board is located, the anti-collision convex portion extends along the direction of the target board toward one side of the main body portion and protrudes beyond the Outside the frame, and/or, the anti-collision convex portion extends along the direction of the main body portion toward one side of the target board and protrudes out of the frame.

In an optional manner, an adhesive member is further included, the adhesive member is disposed on the housing and located in the receiving space, and is used for bonding the housing and the target board , and/or, for bonding the housing and the flexible shield.

In an optional manner, a side of the main body portion facing the target board is provided with a plurality of first reinforcing ribs, and a plurality of the first reinforcing ribs are staggered and formed with a plurality of receiving grooves, at least one A part of the adhesive member is located in the receiving groove and is fixedly connected with the main body part, and the other part is located outside the receiving groove and is fixedly connected with the target board and/or the flexible protective member; and/ Or the side of the main body part away from the receiving space is further provided with a reinforcing convex part, and the reinforcing convex part is enclosed on the main body part to form a closed loop area.

According to another aspect of the embodiments of the present invention, a four-wheel positioning system is provided, comprising: an image acquisition device and the above-mentioned positioning target, wherein the image acquisition device is configured to acquire the position indication pattern of the positioning target , so as to obtain the position information of the positioning target according to the position indication pattern.

When the positioning target of the embodiment of the present invention is in use, the flexible protective member can buffer and protect the target plate, so as to avoid the collision between the target plate and the protective shell when the positioning target is bumped due to vibration or falling on the ground. The target board is deformed or even broken due to rigid collision, which leads to the risk of product failure and cannot be used normally, which improves the reliability and service life of the product. The utility model is simple, the installation process is simple and convenient, and it is beneficial to reduce the production cost.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

FIG. 1 shows an exploded view from a perspective of a positioning target provided by an embodiment of the present invention;

2 shows a front view of a positioning target provided by an embodiment of the present invention;

Figure 3 shows a cross-sectional view along the A-A direction of Figure 2;

FIG. 4 shows a schematic cross-sectional structure diagram of a target plate provided by an embodiment of the present invention;

FIG. 5 shows a three-dimensional cross-sectional view of a flexible protective member provided by an embodiment of the present invention;

FIG. 6 shows a three-dimensional cross-sectional view of a flexible shield provided by another embodiment of the present invention;

Figure 7 shows a perspective view of a positioning target in another embodiment of the present invention;

Figure 8 shows an exploded view of a positioning target in another embodiment of the present invention;

FIG. 9 shows an exploded view from another perspective of a positioning target in an embodiment of the present invention.

The reference numerals in the specific embodiment are as follows:

Housing 10; main body 11; first reinforcing rib 111; reinforcing convex part 112; second reinforcing rib 113; frame 12; anti-collision convex part 121; shaft hole 131; connecting hole 132; ; position indication pattern 21; support layer 22; pattern layer 23; reflective layer 24; flexible guard 30; first wall 31; second wall 32; third wall 33; groove 34; ; Limit hole 51 ; Fixture 60 ; Positioning target 100 .

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 3 . FIG. 1 shows an exploded view of the positioning target 100 provided by the embodiment of the present invention from a perspective, FIG. 2 shows the front view of the positioning target 100 provided by the embodiment of the present invention, and FIG. 3 A cross-sectional view in the direction A-A of FIG. 2 is shown.

In the embodiment shown in the figures, the positioning target 100 includes a housing 10 , a target plate 20 mounted on the housing 10 , and a flexible guard 30 . The target board 20 is provided with a position indication pattern 21, and the position indication pattern 21 is used to indicate the position information of the positioning target. The flexible guard 30 is arranged around the outer circumference of the target board 20 , the housing 10 includes a main body 11 and a frame 12 arranged around the outer circumference of the main body 11 , and the frame 12 encloses a receiving space for accommodating the target plate 20 . The board 20 and the flexible guard 30 are arranged in the receiving space. The flexible guard 30 is located between the target board 20 and the housing 10 . The flexible guard 30 is used to buffer the force between the housing 10 and the target board 20 . Wherein, the position indication pattern may be a circle, a rectangle or a combination thereof, and may also be other patterns that can be used for the detection equipment to obtain the position information of the positioning target through the image acquisition device, such as a two-dimensional code.

In the positioning target 100 in this embodiment, the flexible protective member 30 is arranged around the outer circumference of the target board 20 and installed in the receiving space formed by the frame 12 surrounding the outer circumference of the main body portion 11 , so that the target board 20 is installed in the housing 10 , because the flexible guard 30 is located between the target board 20 and the housing 10 , and is used to buffer the force between the housing 10 and the target board 20 . When the positioning target 100 is in use, the flexible guard 30 can protect the target board 20, and when the positioning target 100 is bumped due to vibration or falling on the ground, the damage caused by the target board 20 and the protection can be reduced. The rigid collision of the shell causes the target board 20 to be deformed or even broken, which leads to the risk of product failure and cannot be used normally, and improves the reliability and service life of the product. The structure is simple, the installation process is simple and convenient, and it is beneficial to reduce the production cost.

In some embodiments, the flexible guard 30 can also be used to provide a pressing force of the target board 20 along the direction of the inner peripheral wall of the frame 12 toward the outer peripheral wall of the target board 20 . That is, in the direction parallel to the plane of the target board 20 , the portion of the flexible guard 30 located between the inner peripheral wall of the target board 20 and the inner peripheral wall of the frame 12 and the inner peripheral wall and the frame of the target board 20 are respectively The inner peripheral wall of 12 is in pressing contact, so that the target board 20 can be fixed in the receiving space by the elastic force of the flexible protective member 30 .

Please refer to FIG. 2 to FIG. 4 . FIG. 4 shows a schematic cross-sectional structure diagram of the target board 20 provided by the embodiment of the present invention. In the specific embodiment shown in the figure, the target board 20 includes a supporting layer 22 arranged in layers. , a pattern layer 23 and a reflective layer 24, wherein the pattern layer 23 is located between the supporting layer 22 and the reflective layer 24, the pattern layer 23 is provided with a position indicating pattern 21, and the supporting layer 22 is located on the side of the pattern layer 23 facing the main body 11. The flexible protective member 30 is disposed on the outer periphery of the target plate 20 by being attached, so as to seal the lamination gap between the support layer 22 , the pattern layer 23 and the reflective layer 24 .

The support layer 22 may be made of glass material, wherein the glass may be organic glass or inorganic glass. It can be understood that the support layer 22 can also be made of other materials to form a plate-like structure with a certain flatness, so as to provide a flat support plane for the reflective layer 24 and the pattern layer 23 . The reflective layer 24 can be made of a transparent material, such as transparent plastic, glass, and the like. The pattern layer 23 can be a pattern printed on the side of the reflective layer 24 facing the support layer 22, or a pattern printed on the side of the support layer 22 facing the reflective layer 24. The printing method can be screen printing, jet printing, etc. make specific restrictions. Of course, the pattern layer 23 may also be a sheet body with a pattern printed thereon, such as a paper sheet or the like.

In this embodiment, the target board 20 is arranged to form a layered structure by superimposing the support layer 22 , the pattern layer 23 and the reflective layer 24 , and the flexible protective member 30 is fitted around the outer periphery of the target board 20 , so that the flexible protective member 30 The lamination gap between the support layer 22, the pattern layer 23 and the reflective layer 24 can be sealed, so that external moisture is not easy to enter between the laminations of the target plate 20, thereby preventing the pattern from being affected by moisture and causing the product to fail to use normally.

Please refer to FIG. 5 , in conjunction with FIGS. 1 to 4 , FIG. 5 shows a three-dimensional cross-sectional view of a flexible protective member 30 provided by an embodiment of the present invention. In the specific embodiment shown in the figure, the flexible protective member 30 includes a first A wall 31 and a second wall 32 provided around the periphery of the first wall 31 . The target board 20 also has a connecting surface facing the main body portion 11 facing the main body portion, the first wall 31 is located between the main body portion 11 and the connecting surface, and the second wall 32 is located between the outer peripheral wall of the target board 20 and the frame 12 . between the walls. Specifically, the connection surface may be the surface of the support layer 22 facing the main body portion 11 .

The flexible shield 30 is provided with the first wall 31 and the second wall 32. Since the first wall 31 is located between the main body portion 11 and the connecting surface of the target board 20 facing the main body portion 11, the first wall 31 can be used for buffering The force between the main body 11 and the target plate 20, the second wall 32 is located between the outer peripheral wall of the target plate 20 and the inner peripheral wall of the frame 12, so that the second wall 32 can be used to buffer the target plate 20 and the target plate 20. The effect between the frames 12 can avoid rigid collision between the housing 10 and the target board 20 .

Please continue to refer to FIG. 1 to FIG. 5 , in the specific embodiment shown in the figures, the flexible shield 30 further includes a third wall 33 , and the third wall 33 and the first wall 31 are disposed opposite to the two ends of the second wall 32 , and the first wall 31 , the second wall 32 and the third wall 33 enclose a groove 34 for fitting with the edge of the target board 20 , and the third wall 33 is provided with a position indicating pattern 21 for revealing escape hatch.

Wherein, the flexible guard 30 is sleeved with the outer peripheral edge of the target board 20 through the groove 34, so that the first wall 31 of the flexible guard is attached to the side (connecting surface) of the target board 20 facing the main body 22. The second wall 32 is attached to the outer peripheral wall of the target board 20 , and the third wall 33 is attached to the surface of the target board 20 facing outside the receiving space.

In this embodiment, the edge portion of the target board 20 is sleeved in the groove 34 enclosed by the third wall 33 and the first wall 31 in the inner peripheral wall of the second wall 32 , so that the flexible protective member 30 can face the target board. 20 plays the role of edging to improve the waterproof performance of the flexible guard 30, and at the same time, the first wall 31, the second wall 32 and the third wall 33 of the flexible edging can protect the target board 20 in all directions. In this way, the flexible protective member 30 and the target board 20 can be matched with each other through a socket, which is convenient for disassembly and assembly.

In some embodiments, the first wall 31 may also be provided with an escape opening of the same size as the third wall 33 , so that the flexible guard 30 forms a closed annular structure adapted to the outer peripheral wall of the target board 20 . It should be noted that, the annular structure does not refer to a circular ring in particular, but refers to a structure similar to an annular shape, such as the rectangular annular structure shown in the figure. Of course, in some other embodiments, the first wall 31 may also not be provided with an escape opening, as shown in FIG.

Referring back to FIGS. 1 to 3 , in the embodiment shown in the figures, the outer wall of the frame 12 is provided with a plurality of anti-collision protrusions 121 , and the plurality of anti-collision protrusions 121 are disposed around the outer periphery of the frame 12 . The anti-collision protrusions 121 are used to reduce the probability that the main body 11 of the casing 10 and other parts of the frame 12 collide with the outside.

As an example, when the positioning target 100 falls on the ground, the anti-collision convex portion 121 may collide with the ground first, so that the anti-collision convex portion 121 consumes most of the impact force caused by the collision, thereby reducing the main body portion 11 or the frame. The probability of damage to other parts of the 12 due to collision with the ground reduces the force between the casing 10 and the target board 20 due to the collision, thereby reducing damage to the target board 20 .

In the specific embodiment shown in the figure, the anti-collision convex portion 121 can be made of hard materials, such as metal materials such as copper, iron, aluminum and its alloys, or other hard alloy materials. Of course, the anti-collision convex portion 121 is also It can be made of other hard materials with good structural strength, such as PC, PET and other hard plastics.

In this embodiment, the anti-collision convex portion 121 made of a hard material is used to obtain better structural strength, which can effectively reduce the damage to the anti-collision convex portion 121 due to collision.

Preferably, the bump-proof convex portion 121 can be made of a lightweight metal such as aluminum, aluminum alloy, etc., which is rigid and light in weight.

In other embodiments, the anti-collision convex portion 121 can also be made of a flexible material, such as rubber, etc., so that the anti-collision convex portion 121 can buffer the force during collision through the elasticity of the flexible material, and reduce the transmission of the collision force to the The target plate 20 is damaged when the target plate 20 is used, so as to prevent the target plate 20 from being deformed or damaged due to collision.

In the specific embodiment shown in the figure, the anti-collision convex portion 121 and the frame 12 are integrally formed, so as to improve the structural strength of the anti-collision convex portion 121 .

It should be understood by those skilled in the art that, in other embodiments, the anti-collision convex portion 121 and the frame 12 may not be an integral structure.

In some embodiments, in a direction perpendicular to the plane of the target board 20 , the anti-collision convex portion 121 extends along the direction of the target board 20 toward the side of the main body portion 11 and protrudes out of the frame 12 , and/or , the anti-collision convex portion 121 extends along the direction of the main body portion 11 toward the side of the target board 20 and protrudes out of the frame 12 .

That is, in the direction perpendicular to the connecting surface of the target board 20 , the anti-collision convex portion 121 may protrude toward the side of the target board 20 toward the main body portion 11 , or the anti-collision convex portion 121 may be along the main body. The part 11 protrudes toward the side of the target board 20 , or the anti-collision convex part 121 protrudes toward the side of the target board 20 toward the main body part 11 , while the anti-collision convex part 121 is along the main body part. 11 protrudes in a direction toward one side of the target plate 20 .

Wherein, in the case where the anti-collision convex portion 121 extends along the direction of the target board 20 toward the main body portion 11 and protrudes out of the frame, the extended and protruding portion of the anti-collision convex portion 121 in this direction will collide with the outside first. , so as to reduce the probability that the side of the main body 11 away from the accommodation space collides with the outside; similarly, for the case where the anti-collision convex portion 121 extends along the direction of the main body 11 toward the target board 20 and protrudes out of the frame, The protruding part of the anti-collision protrusion 121 in this direction will collide with the outside first, so as to reduce the target board 20 and other parts of the frame 12 on the same side of the main body 11 toward the target board 20 . The probability of an external collision. In this way, the anti-collision convex portion 121 can also play a certain anti-collision protection effect on the main body 11 , the frame 12 and the target plate 20 of the positioning target 100 in the direction perpendicular to the target plate 20 .

Please refer to FIG. 7 and FIG. 8 , in conjunction with FIG. 1 and FIG. 2 , FIG. 7 shows a perspective view of a positioning target 100 in another embodiment of the present invention, and FIG. 8 shows positioning in another embodiment of the present invention Exploded view of Target 100. In the specific embodiment shown in the figures, the housing 10 has a polygonal, circular or oval shape. That is, the outer shape and outline of the housing 10 are polygonal outline structures, circular or elliptical outline structures.

As an example, when the housing 10 is rectangular, the frame 12 is a rectangular frame, wherein the target board 20 can also be a rectangular board, and the flexible guard 30 can also be a square ring adapted to the outer peripheral wall of the target board 20 In the structure, the anti-collision protrusions 121 are disposed at the corners of the outer peripheral wall of the frame 12 .

For another example, when the casing 10 is circular, the frame 12 is a circular frame, wherein the target board 20 can be a circular board, and the flexible guard 30 can also be adapted to the outer peripheral wall of the target board 20 The ring structure is formed, and the anti-collision protrusions 121 are evenly arranged around the outer peripheral wall of the frame 12 .

It should be noted that when the housing 10 is polygonal, it can be a regular polygon, such as a square, a regular pentagon, etc., or a non-regular polygon, such as a rectangle, and can be a regular polygon or an irregular polygon. The above-mentioned shapes of the housing 10 , the target board 20 and the flexible guard 30 are only examples, and there is no necessary correlation between the specific shape of the housing 10 and the specific shapes of the target board 20 and the flexible guard 30 . , the target plate 20 and the flexible guard 30 may have different shapes and structures respectively.

In some embodiments, the housing 10 and the bump bumper 121 are made of the same or different materials.

Referring back to FIG. 1 to FIG. 4 , in the specific embodiment shown in the figures, the positioning target 100 further includes an adhesive member 40 , and the adhesive member 40 is disposed on the housing 10 and located in the receiving space for bonding The member 40 is used for bonding the housing 10 to the target plate 20 , and/or for bonding the housing 10 to the flexible guard 30 .

That is, the adhesive member 40 can be used to bond and fix the housing 10 and the target board 20, or the bonding member 40 can bond and fix the housing 10 and the flexible protective member 30, or the bonding member 40 can both position the target. 100 is adhered and fixed to the casing 10 , and the adhesive member 40 also adheres and fixes the flexible protective member 30 to the casing 10 . It should be noted that, since the flexible protective member 30 itself has elastic force and is arranged around the outer circumference of the target board 20, therefore, for the case where the adhesive member 40 only bonds and fixes the housing 10 and the flexible protective member 30, the flexible protective member The target plate 20 can also be fixed in the housing 10 by means of its own elastic force.

In this example, by providing the adhesive member 40, the target board 20 and the flexible protective member 30 can be installed and fixed in the accommodation space of the housing 10 by means of adhesive bonding. This connection method is simple and convenient to connect, has a good fixing effect, and is easy to install. Convenient and low cost to use.

Specifically, one end of the adhesive member 40 is connected to the main body portion 11 , and the other end of the adhesive member 40 is connected to the target board 20 and/or the flexible protective member 30 .

As an example, in the case where the first wall 31 of the flexible protective member 30 is not provided with an escape opening, one end of the adhesive member 40 is connected to the main body portion 11 , and the other end of the adhesive member 40 is connected to the first wall of the flexible protective member 30 . 31 is connected to one surface of the main body portion 11 . In the case where the flexible protective member 30 is provided with an escape opening, one end of the adhesive connecting member is connected to the main body portion 11 , and the other end passes through the escape opening of the first wall 31 and the connecting surface of the target board 20 toward the main body portion 11 (ie, the support The side of the layer 22 facing the main body portion 11) is fixedly connected.

It can be understood that, in other embodiments, the adhesive member 40 may also be located between the second wall 32 of the flexible protective member 30 and the inner peripheral wall of the frame 12, so as to connect the second wall 32 of the flexible protective member 30 to the shell The frame 12 of the body 10 is fixedly connected.

In the specific embodiment shown in the figure, the side of the main body 11 facing the target board 20 is provided with a plurality of first reinforcing ribs 111 , and the plurality of first reinforcing ribs 111 are staggered and formed with a plurality of receiving grooves. A part of the connector 40 is located in the receiving groove and is fixedly connected to the main body 11 , and another part of at least one adhesive member 40 is located outside the receiving groove and is fixedly connected to the target board 20 and/or the flexible protective member 30 .

That is, the number of the adhesive members 40 may be less than or equal to the number of the receiving grooves, for example, the number of the receiving grooves may be 6, and the number of the adhesive members 40 may be 4, and the adhesive members 40 are placed in the receiving groove. The grooves can be arranged according to actual needs, which is not specifically limited here.

In this embodiment, a plurality of first reinforcing ribs 111 are provided on the side of the main body portion 11 located in the receiving space, and the structural strength of the main body portion 11 is improved by the first reinforcing ribs 111 . Lightweight design.

Please refer to FIG. 9 , in conjunction with FIG. 1 , FIG. 9 shows an exploded view from another perspective of the positioning target 100 in the embodiment of the present invention. In the embodiment shown in the figure, the main body portion 11 is further provided with a reinforcing convex portion 112 on the side facing away from the receiving space, and the reinforcing convex portion 112 encloses the main body portion 1 to form a closed loop area.

In the closed-loop area, when the casing 10 collides with the outside, the probability of the reinforcement protrusion 112 colliding with the outside is relatively high. Therefore, the reinforcement protrusion 112 protects the part of the main body 11 in the closed-loop area to a certain extent. effect.

Specifically, the reinforcing protrusions 112 may be connected with the anti-collision protrusions 121 , that is, the reinforcing protrusions 112 are sequentially connected to a plurality of the anti-collision protrusions 121 along the circumferential direction of the main body 11 , and are close to the anti-collision protrusions in the closed loop area. A plurality of second reinforcing ribs 113 are arranged side by side at the position of the bumping convex portion 121 to improve the structural strength of the housing 10 adjacent to the bumping bumping portion 121 .

In some embodiments, the adhesive member 40 is made of a flexible material. As an example, the adhesive member 40 may be a viscous glass pad made of glass glue material. The glass glue has strong adhesion to components made of metal, glass, etc. Therefore, the shell 10 is made of a metal material. The support layer 22 of the target board 20 is made of glass material and has good flatness, and the glass pad can be directly bonded and fixed to the main body 11 and the target board 20 respectively.

Of course, in other embodiments, the adhesive member 40 may also be made of other flexible materials, such as a silicone pad made of silicone material.

It should be noted that the adhesive member 40 is made of a flexible material, which means that the main material of the adhesive member 40 is made of a flexible material, and in order to increase the viscosity of the adhesive member 40, a material that can increase the viscosity can be added to the flexible material. Other materials, such as adhesives, etc.

In this embodiment, the adhesive member 40 is made of a flexible material, so that the adhesive member 40 can not only fix the flexible protective member 30 and the target board 20 in the casing 10, but also be able to bond when a collision or vibration occurs. Through its own elastic properties, the component 40 buffers part of the force between the casing 10 and the target board 20 to protect the target board 20 and improve its service life.

In the specific embodiment shown in the figure, the positioning target 100 is also installed with a shaft 50, the main body 11 is further provided with a connecting part 13 on the side away from the receiving groove, the connecting part 13 is provided with a shaft hole 131, and one end of the installation shaft 50 is fixed Inside the shaft hole 131 , the other end of the installation shaft 50 is located outside the shaft hole 131 , and the other end of the installation shaft 50 is used for the fixed connection of the external connector. For example, in use, the mounting shaft 50 is fixedly connected by a wheel hub clip, so that the positioning target 100 is mounted and fixed on the wheel hub of the automobile. Wherein, the connecting portion 13 may be located in the closed-loop region of the main body portion 11 .

In the specific embodiment shown in the figure, the installation shaft 50 is detachably connected to the shaft hole 131 . Specifically, the positioning target 100 further includes a fixing member 60 . The fixing member 60 is a conventional fixing member 60 such as a bolt. The connecting portion 13 is further provided with at least one connecting hole 132 communicating with the shaft hole 131 . The installation shaft 50 is located in the shaft hole 131 . A limit hole 51 is provided at a position corresponding to the connection hole 132 at one end of the mounting member 60 , and one end of the fixing member 60 is screwed with the connection hole 132 and inserted into the limit hole 51 , thereby fixing the installation shaft 50 to the connection portion 13 of the housing 10 . With this connection method, the mounting shaft 50 and the housing 10 are easily disassembled and assembled, and are easy to use.

In another aspect of the present application, a four-wheel positioning system is also provided, and the four-wheel positioning system includes an image acquisition device and a positioning target 100 . The image acquisition device is used to acquire the position indication pattern 21 on the target board 20 of the positioning target 100 , so as to obtain the position information of the positioning target 100 according to the position indication pattern 21 .

Wherein, the image acquisition device may be a camera in a four-wheel aligner, and the number of positioning targets 100 is four. When in use, the four positioning targets 100 are respectively installed in the four tires of the car, and the image acquisition device passes through The position indication pattern 21 of the positioning target 100 obtained by photographing is obtained, and the position information of the positioning target 100 is obtained after the computer processing of the four-wheel aligner, so as to obtain the relevant parameter information of the four wheels of the car, such as the kingpin caster (angle), Kingpin inclination (angle), front toe-in, rear toe-in, etc.

It should be noted that, unless otherwise specified, the technical or scientific terms used in the embodiments of the present invention should have the usual meanings understood by those skilled in the art to which the embodiments of the present invention belong.

In the description of the embodiments of the present invention, the orientation or positional relationship indicated by the technical terms "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present invention and simplifying the description, while It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.

In addition, the technical terms "first", "second", etc. are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the technical terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection, or It can be detachable connection or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A positioning target, characterized in that, comprising:

a target board, the target board is provided with a position indication pattern, and the position indication pattern is used to indicate the position information of the positioning target;

a flexible guard, the flexible guard is arranged around the outer periphery of the target board;

a casing, the casing includes a main body part and a frame arranged around the outer periphery of the main body part, the frame encloses a receiving space, the target board and the flexible guard are arranged in the receiving space, and the The flexible guard is located between the target board and the shell, and the flexible guard is used for buffering the interaction force between the shell and the target board.
The positioning target according to claim 1, wherein the target plate comprises a supporting layer, a reflective layer and a pattern layer located between the supporting layer and the reflective layer, which are arranged in layers, the pattern layer The position indication pattern is provided, and the support layer is located on the side of the pattern layer facing the main body;

The flexible protective member is attached to the outer periphery of the target plate to seal the lamination gap between the support layer, the pattern layer and the reflective layer.
The positioning target of claim 2, wherein the flexible shield comprises a first wall and a second wall disposed around the periphery of the first wall;

The target board further has a connection surface facing the main body, the first wall is located between the connection surface and the main body, and the second wall is located between the outer peripheral wall of the target board and the main body. between the inner peripheral walls of the frame.
The positioning target according to claim 3, wherein the flexible shield further comprises a third wall, the third wall is disposed opposite to the first wall at both ends of the second wall, and The first wall, the second wall and the third wall enclose a groove for fitting with the edge of the target board, and the third wall is provided with a position indicator for revealing the position Pattern escape.
The positioning target according to claim 1, wherein the outer wall surface of the frame is further provided with a plurality of anti-collision convex parts, and the plurality of the anti-collision convex parts are arranged around the outer periphery of the frame.
The positioning target according to claim 5, wherein the anti-collision convex portion and the frame are integral structures.
The positioning target according to claim 5, wherein, in a direction perpendicular to the plane where the target plate is located, the anti-collision convex portion is along the side of the target plate facing the main body portion. The direction extends and protrudes out of the frame, and/or the anti-collision convex portion extends along the direction of the main body portion toward the target board side and protrudes out of the frame.
The positioning target according to any one of claims 1-7, further comprising an adhesive member, wherein the adhesive member is disposed on the housing and located in the receiving space, and is used for bonding Connecting the shell and the target board, and/or for bonding the shell and the flexible shield.
The positioning target according to claim 8, wherein a plurality of first reinforcing ribs are provided on a side of the main body portion facing the target plate, and a plurality of the first reinforcing ribs are staggered and formed to form a plurality of first reinforcing ribs. At least one part of the adhesive member is located in the receiving groove and is fixedly connected with the main body part, and the other part is located outside the receiving groove and is connected with the target board and/or the flexible guard fixed connection of parts; and/or

The side of the main body part facing away from the receiving space is further provided with a reinforcing convex part, and the reinforcing convex part is enclosed on the main body part to form a closed loop area.
A four-wheel positioning system, characterized in that it comprises: an image acquisition device and the positioning target according to any one of claims 1-9, wherein the image acquisition device is used to acquire the said positioning target. a position indication pattern, so as to obtain the position information of the positioning target according to the position indication pattern.